योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-62, verse-26

परमार्थमहाधातुर्वेद्यनिर्मुक्तचिद्वपुः ।
एवं नाम स्वयं भाति स्वभावस्येव निश्चयः ॥ २६ ॥

paramārthamahādhāturvedyanirmuktacidvapuḥ ,
evaṃ nāma svayaṃ bhāti svabhāvasyeva niścayaḥ 26

26. The transcendent first principle, is of the form of the unknowable intellect; which exhibits itself in the constitution of the universe, which is verily its very nature.